Essays about: "LWFA"

Found 5 essays containing the word LWFA.

1. 1. Multi-spectral X-ray imaging with a laser-plasma accelerator

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Andrea Angella; [2022]
   Keywords : Multi-spectral imaging; single-photon counting; X-ray absorption spectroscopy; XAS; LWFA; laser-wakefield acceleration; K-edge; imaging; metal-detection algorithm; Physics and Astronomy;

   Abstract : This master thesis focuses on the creation of an algorithm to perform multispectral imaging of a metallic target using X-rays. The generation of an ultrashort high-power low-divergent X-ray beam is performed by means of a Ti:Sapphire laser driven wake-field plasma accelerator. READ MORE

3. 2. Relativistic attosecond electron pulses by laser wakefield acceleration

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Cornelia Gustafsson; [2020]
   Keywords : laser wakefield accelerator; laser wakefield acceleration; attosecond; electron pulses; Physics and Astronomy;

   Abstract : The search for cheaper and more compact accelerators has led to the development of laser-driven plasma-based accelerators. In comparison to conventional particle accelerators, the plasma-based accelerator is inherently insensitive to the breakdown of the acceleration structure and therefore greater accelerating fields can be obtained. READ MORE

4. 3. In-line Phase-contrast Tomography using Betatron X-rays Produced by a Laser-Plasma Accelerator

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Kristoffer Svendsen; [2017]
   Keywords : source size; x-ray; in-line; phase-contrast; phase contrast; LWFA; laser wakefield acceleration; tomography; diffraction; diffraction simulation; laser-plasma acceleration; Physics and Astronomy;

   Abstract : X-ray phase-contrast imaging is a powerful technique that allows great resolving power for low absorbing samples, such as biological tissue. This method relies on measuring the phase shift induced by the sample instead of the absorption traditional radiography relies on. READ MORE

5. 4. Reproducibility of bunches of electrons accelerated in laser driven wakefields

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Philip Siederer; [2016]
   Keywords : Laser; wakefield; acceleration; electron acceleration; plasma; LWFA; Physics and Astronomy;

   Abstract : Laser wakefield acceleration (LWFA) utilises a high intensity laser pulse to excite a plasma density wave with associated large directed electric fields. These large electric fields can be used to accelerate electrons, making LWFA a good candidate for a compact electron beam source. READ MORE

6. 5. Parametric study of density down-ramp injection in laser wakefield acceleration

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Henrik Ekerfelt; [2015]
   Keywords : Laser wakefield acceleration; LWFA; gradient injection; density down-ramp injection; particle-in-cell simulation; PIC; top-view; top view; Thomson scattered light; trace; Physics and Astronomy;

   Abstract : In laser wakefield acceleration (LWFA) a high intensity laser pulse is used to excite a plasma density wave with an associated electric field. This electric field can be used to accelerate electrons. However, to be accelerated the electrons first of all need to enter the plasma wave. This process is called injection. READ MORE